Watching a video of Michael Holding trying to explain Hyperextension in Shoaib Akhtar's bowling (after Greg Chappell raised it in Pak). Holding says that there are other bowlers who have same hyperextension as well but they dont bend their arms as much as Shoaib does and he picks Indian bowler RP Singh who also has hyperextension as well.
In the clips he shows the hyperextension in RP Singh's arm and compares it to Shoaib's and then shows their side-on bowling actions and then the front-on action. From the side on the hyperextension is clearly visible in both the bowlers, but when you see it front on, RP Singh's action looks perfect, but in Shoaib's action there is a very visible bend. The clip ends there and Holding stops short of giving his verdict.
I am not the expert here either on bowling or on Biomechanics, I was just wondering how can one guy bowl with straight arm(atleast when you look at it from front) and the other can not ?
PS :- I wish I could post the video here but the forum rules dont really allow us to do si, but I can say this that it was shown during India's recent tour of Pakistan, after the end of the 4th day play.